Datasheet

Section 5 Clock Pulse Generator
REJ09B0465-0300 Rev. 3.00 Page 133 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
OSCHLT
BAKCLK
φOSC
φbase
Operation at main oscillator clock
φOSC stops.
[Legend]
φOSC: Main oscillator clock
OSCHLT: Main oscillator clock stop detection signal
BAKCLK: Backup destination clock
φbase: System base clock
Oscillation
settling time
Clock
switching
time
Operation at backup
destination clock
Figure 5.10 Timing of Backup Operation When Main Oscillator Stops at High Level
(When the backup destination clock is stopped)